Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

A handy lil'link below to do some arith on wheel size, etc.
With the diff front/rear, you can't calc Exact, but the "rear to rear" diff
you are wondering about is minimal. Doubt test equip could record
a diff 0-60 speed, etc. Would look "cool" but not impact much, imo.
GL,md

One of the problems about Singapore is the cars are hugely expensive, and there are very few car specialists / dealers who really know the stuff, including the BMW dealers themselves. The sales person didn't even know if my car had Cruise Control (not that it is important in Singapore)!